Siphon.



PTENTED JUNE 16, 1908'. D. LANDAU.

SIPHON.

PPLIOATION FILED AUG. 6,'1907.

IN VEN TOR,

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WITNESS/55.

UNITED STATES DEWIS LANDAU, OF SAN rnANCIsCo, CALIFORNIA. j-,

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Specification of Letters Patent.

Patented .Tune 16, 1908.y

Application filed. August 5, 1907. Serial No. 387,227.

To all whom 'tt may concern:

Be it known that 1, DEwIs LANDAU, a citizen of the United States,residing at San Francisco, in the county of San Francisco and State ofCalifornia, have invented new and useful Improvements in Siphons, ofwhich the following is a specification.

This invention relates to improvements in siphons or other receptaclesfor dispensing liquidssunder pressure, the object of the invention beingto provide simple and convenient means for reducing the air pressure ofsuch receptacles, so as to cause the liquids to flow therefrom with lessviolence, and also to permit the receptacle to be completely emptied ofliquid while maintaining a suitable pressure therein.

1n the accompanying drawing, the figure is a vertical section of thedevice.

Referring to the drawing, 1 indicates the body of a siphon bottle, and 2is the head thereof, formed with a dispensing spout 3 and a finger lever14 connected to the usual valve, not shown, for controlling the passageof the liquid through said spout, and with a charging spout Ll, adaptedto be connected with a suitable charging apparatus such as that shown inmy patent U. S. Letters Patent No. 816,985, dated April 3rd, 1906. Thisbottle is intended to be used in an inverted position, so that thedispensing spout extends downwardly therefrom when so inverted. Throughthe head 2 passes loosely a glass tube 5 connected to a sleeve 6 havin(Ta flange 7, and around said sleeve is a rub er gasket S. Said iiange 7is in contact with a cap 9 having an internal thread by means of whichit is screwed upon the threaded end of the head 2 of the Siphon,the'gasket 8 being interposedbetween theflange 7 and the edge of saidthreaded end, so that the sleeve 6 is contained within said threadedend, spaced therefrom, the tube 5 extending therethrough into the centerof the body of the siphon bottle. Said cap has formed therein a conduit10 leading from the side to the center and then upwards and connectedwith the interior of the sleeve 6 and of the glass tube 5, and saidconduit is controlled at the side by means of a needle valve 11. The capis formed with a downward extension or plug 12 adapted to rest in asocket in a suitable stand 13, or, if desired, the siphon can besupported by the charging apparatus and attached thereto by thecharginginlet.

The siphon bottle may be charged in any desired manner, and when it isfound that the pressure of the air in the siphon is too great, theneedle valve is opened slightly to permit a sufficient amount of air toflow from the siphon, while at the same time drawing the liquidtherefrom by the dispensing spout.

1t has heretofore been the practice to charge siphon bottles at a veryhigh pressure, from 150 to 180 pounds. This practice is very dangerous,and numerous accidents have occurred therefrom. The pressure hasbeen sohigh in order to insure dispensing all the liquid contained in thebottle, for if a lower pressure were used a quantity of the liquid wouldbe left in the siphon. 1n the present apparatus no such high pressure isneeded, for the siphon can be filled from time to time from the chargingapparatus, the liquid being maintained therein at a suitable pressure.And when lthe liquid is discharged at too high a pressure, resulting forinstance, when dispensing beer in the formation of an excessive quantityof foam, the pressure can be readily reduced to just that magnitude thatwill allow the beer to escape without violence and with only a moderatequantity of foam. It will also be observed that, with this arrangement,however the pressure is reduced in the siphon bottle, the liquid willstill continue to flow therefrom, on account of the inverted position ofthe bottle. No vacuum can be created in the siphon which would preventthe flow of the liquid, because it is possible at all times to admit airto the upper part of the Siphon. My improved device therefore providesmeans both for reducing the pressure to prevent the liquid flowing outwith violence, and also for increasing the pressure, when desiring toprevent the formation of a vacuum in the bottle which would arrest theoutflow of the'liquid. It will readily be understood that by closing theneedle valve, after drawing liquid from the siphon at the same time thedischarge valve is closed, the pressure in the siphon can be maintainedthe same, until the neXt occasion of use of the Siphon `and thus therewill always remain sufficient pressure in the siphon to aerate theliquid and discharge the same.

The needle valve 11, comprising, with its seat, self contained means forholding the valve at any desired position of adjustment, permits the airpassage to be opened to let air in more or less freely, as may bedesired,

and to remain open to that extent, without any further attention on thepart of the operator, while dispensing from the receptacle liquidsufficient to lill a number of glasses in succession. Furthermore, saidvalve is located at a distance from the controlling mechanism of theliquid discharge spout, so that said controlling mechanism can be` sooperated to completely open the liquid discharge spout, without openingthe air passage. In fact, said air passage may be controlled entirelyindependently of the liquidcontrolling means.

I claim 1. A siphon bottle having a discharge spout dischargingdownwardly when the bottle is inverted, means for controlling thepassage of the liquid through said discharge spout, a tube in saidbottle leading from its bottom when so inverted to a point near its top,and an air controlling valve for controlling the passage of air in saidtube, said valve and its seat being provided with selfcontained meansarranged to retain the valve at any desired position of adjustment forany desired size of said passage, and the spout-controlling means beingarranged remote from said valve, to permit said controlling means to befully operated independently of said valve, substantially as described.

2. A siphon bottle comprising a body portion, a head having a charginginlet and a discharge spout, the latter extending in a said cap andhead, a gasket for making a tight joint therebetween, a tube connectedwith said sleeve and extending to a point near the other end of thebottle, Asaid cap having a conduit leading fron an external point tosaid sleeve, and a valve controlling said conduit, substantially asdescribed.

3. A siphon bottle comprising a body portion, a head having a chargingyinlet anda discharge spout, the latter extending in a downwarddirection when the bottle is inverted, a cap closing said head, a sleevehaving a flange adapted to be clamped between said cap and head, agasket for making a tight joint therebetween, a tube connected withsaidsleeve and extending to a point near the other end of the bottle, saidcap having a conduit leading from an external point to said sleeve, saidcap having a plug adapted to rest in a suitable socket in a stand tosupport the bottle in an-inverted position, and a valve controlling saidconduit, substantially as described.

In testimony whereoiI I have hereunto set my hand in the witnesses.

DEWIS LANDAU.

Witnesses:

FRANCIS M. WRIGHT, D. B. RICHARDS.

presence of two subscribing-

